Spark-arrester



(No Model.) -2 Shets-Sheet 1.

J. H. OPTENBERGS SPARK ARRESTER. No. 352,063. Patented Nov 2,1886.

' WITNESSES "INVENTOR:

$5M V BY ATTORNEYS.

N. PEIERS. Phclo-Ulhcg -IPW Washington, I) C.

T aZZ whom it may concern.-

I of Oshkosh, in the county of "Winnebago and} UNI TED STATES PATENT OFFICE.

JOHN H. OP'TENBERG, or osHKosH, WISCONSIN.

3 PA RK-ARRESTE R.

SPECIFICATION forming part of Letters Patent No. 352,063, dated November 2,1386. I

Application filed March 13, 1886. Serial No. 195,092. (No model.)

Be it known that 1, JOHN H. OPTFINBERG,

State of Wisconsin, have invented a new and Improved Spark-Arrester, of which the following is a full, clear, and exact description.

My invention relates to an improvement in that form of spark-arrester illustrated and described in Letters Patent No. 263,569, granted to me on the 29th day of August, 1882; and the invention consists of a novel arrangement whereby the main deflector may be raised from itsnormal position to a position that will allowafree'draftthrough the smoke-stack;

and the invention further consists of certain novel and improved constructions and combinations of parts, which will be hereinafter .de-' scribed, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which-similar letters of reference indicate corresponding parts in all the figures.

' Figural is a central sectional elevation of a smoke stack provided with my improved form of spark-arrester. Fig. 2 is a sideview applicable to engines burning straw.

of an improved form of screen, more especially Fig. 8 is a sectional plan view of the screen illustratedin Fig. 2. Fig. 4 is a detail view illustrating the construction of the upper screen c111 ployed in straw-burning engines, and Fig. 5 is a sectional "plan view of the same.

In the drawings, A represents a smokestakck proper, about which there is arranged a j acket, B, which constitutes the inclosing case or shell of the spark-arresting apparatus, the bottom 0 of this inclosing-jacket being inclined downward irom the lower edge of the jacket to the point a, where it is joined to the stack. As clearly shown, the jacket is formed in two sections, b b, the section I) being pertral opening, arranged to be closed' by an inverted bell-shaped cover, O,'that is provided with a vertical stem, 6, extending upward through apertures formed in a casing, D, that isbolted to the upper side of the deflector O, and arranged as clearly shown in Fig. 1. This casing D is formed with a standard, 6, upon which there is arranged a bell-crank lever, E, one arm of said lever engaging with an eye formed at the upper end of the stem e, while the other arm of the lever E is engaged by an eye, f, formed upon the inner end of a manipulating rod, F, which passes outward through an aperture formed in the jacket, and is guided in ways formed in the hanger g and standard 9, a setscrew,h,bein g arranged in the standard 9, so that the rod may be clamped in any position desired. An annular shoulder, i, is formed upon the outer face of the deflector Qand upon this shoulder there is-seated an annular plate, G, provided with handles g and formed with a flange, jj, which extends downward from the outer edge of the plate. To this flange j the upper edge of a screen, H, is secured, said screen being made of wire-cloth and being in the form of the frustum of a cone, the lower edge of the screen being supported and held by a ring, H, which fitsclose against the inner face of the jacket B. At some little distance above the upper edge of the screen H the jacket B is carried inward, and to about the middle of this inwardly-extending portion of the jacket there is secured a second deflector, I, that isfunnelshaped, as shown.

In the upper portion of the j acket B, I mount an inverted cone-shaped screen, K, that is held by a ring, K, arranged to fit loosely within the upper end or mouth of the jacket, said jacket being formed with a chamber, L, formed .of an ordinary wind-trap.

The operation of the apparatus described is as follows: The sparks carried up through the stack A by means of the artificial draft produced by the jet are thrown against the deflector O and its cover 0, and the heavier sparks and cinders will drop downward upon the inclined bottom 0 of the jacket, to be there constantly agitated by the current, and as their Weight decreases to bethrown up against the screen H, through which the finer sparks will pass, to be carried upward into the deadair space 0 beneath the deflector I, the sparks finally passing downward beneath said deflector I and upward into the air space L, formed near the top of the j acket, certain of the finer sparks, together with the smoke, passing out through the screen K; but it will of course be understood that before so passing out of the jacket the sparks would be so thoroughly broken up that they would be incapable of doing any injury by setting fire to surrounding objects.

If it is desired to kindle the fire without using the jet or exhaust within the stackthat is,without an artificial draft the manipulating-rod F is drawn outward, which movement of the rod will, through the medium of the lever B, raise the cover 0 from its seat upon the deflector 0, thus opening the way for a straight draft upward through the jacket. When it is desired to clean out the jacket, the catch 0 is loosened and the section'b thrown back upon its hinge-connection with the sec- .tion I), after which the screen H may be removed from its position within the jacket, the parts being easily handled through the me- "dium of the handles G.

When straw is burned, I have found that wire-cloth screens soon become clogged, and hence when straw is used as a fuel I prefer to use such screens as are illustrated in Figs. 2, 3, and at, wherein I represents a screen designed to take the place of the screen H, the walls of this screen 1? being formed with vertical strips p p, the edges r r of which are bent inward. These strips p" are in concentric rows, the strips being arranged in a row within the line of the strips 1), and opposite the spaces between said strips 1), and it will be understood that the screen 1? is formed with handles G G, and arranged so as to be substituted for the screen H.

In Figs. 4 and 5 I illustrate a construction designed to take the place of the screen K when straw is used as fuel, and in this case the strips from which the screen is formed are arranged in the same manner described in connection with Figs. 2 and 3, except that they are united to form a cone-shaped screen, and the edges 1' are bent outward instead of inward-that is, the

edges in each case are bent to the edges on which the sparks strike.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a stack and inclosing-jacket, of a deflector having a movable central portion, an elbow-lever pivoted to a support above the deflector and having one of its arms connected to the said movable portion of the deflector, and sliding operatingrod connectcd to the other of the said elbow-lever and projecting through the jacket, substantially as herein shown and described.

2. The combination, with the stack and an inclosing-jacket formed with an inclined bottom, of a deflector connected to the stack,.a screen supported by the deflector and extending downward and outward to meet the inner face of the jacket, 2. second deflector, I, a coneshaped screen, and a trap, L, substantially as described.

3. The combination, with a stack and its inclosing-jacket, of a deflector supported by the stack, a screen formed of strips 19 p, the edges of which are bent inward, as described, the strips being arranged to break joints, substantially as described.

4. The combination, with a stack and its jacket, of a deflector arranged above and supported by the stack, a screen, P, arranged about the deflector, and formed of strips 1) p, the edges of said strips being bent inward, a deflector, I, and an inverted-cone-shaped screen, formed of strips 2 p, the edges of which are bent outward, substantially as described.

5. The combination, with a stack, of a deflector supported by and arranged above said stack, said deflector being provided with a cover, 0, having a stem, 0, that is guided in a frame, D, a lever, E, and a manipulating-rod, F, all substantially as described.

JOHN H. OPTENBERG. 

